Jugulodigastric is a Superior deep cervical lymph node and it mainly drains oropharynx, cheek, part of lip.
Jugulodigastric lymph now is located behind the angle of the mandible, where posterior belly of digastric muscle is crossed superficially by internal jugular vein.
It can be swollen under following conditions -
1) Infections - Tonsillitis, Tonsillar abscess, Adenoiditis, Pharyngitis, dental infections and other infections of lip, cheek. Rare conditions like in HIV, TB
2) Malignancy - Hodgkins lymphoma
3) Metastasis from other organs especially from Head and neck region